baber/WOPTO huggingface dataset:
Patent GB-350715-A (GB)
Title: Improvements relating to ohmmeters
IPC: G01R27/02
Filed: 1930-06-04
Abstract: 350,715. Resistance measurements. EVERSHED & VIGNOLES, Ltd. and ROLFE, G. B., Acton Lane Works, Chiswick, London. June 4, 1930, No. 17329. [Class 37.] In a moving-coil ohmmeter for measuring high insulation resistances, the field magnet is provided with one or more polar extensions which repel the current coil as this approaches the zero position, thereby enabling the zero mark to be included on the scale with 'a comparatively low series resistance. As shown in Fig. 1, both sides of the current coil c and one side of the pressure coil P move in the gap between the polepieces R<1>, R<2> of the permanent magnet M and the fixed core K. A horn H extends from the lower polepiece R<2> so as to form a subsidiary polepiece F in the neighbourhood reached by the current coil c as the pointer X approaches the zero position. Interaction between this polepiece and the coil C produces a back torque which reduces the deflection from the infinity position. In a modification, Fig. 2, two horns H<1>, H2 are provided, the coils C, P being spaced apart axially so that the horns co-operate with the current coil only.
Patent GB-814856-A (GB)
Title: Improvements relating to inside bead trimmers
IPC: B23D79/02
Filed: 1957-05-31
Abstract: 814,856. Broaching. STEWARTS & LLOYDS Ltd. May 31, 1957 [June 13, 1956], No. 17358/57. Class 83 (3). A tool for trimming the welding-bead 13 from the inside of a tube 20 comprises a body 15 having means for urging a cutter 25 against the bead, and mechanical means for clamping the cutter in its support. The cut-away bead 13<SP>1</SP> passes through the tool body and is carried with the tube as it is traversed over the tool. The body is supported by bead-engaging rollers 30, rollers 35 on an adjustable lever arm 36, and rollers 55 on adjustable spring-urged pivoted arms 60. The tungsten-carbide tool 25 has a curved cutting edge and a dished front face. Its side edges rest against shoulders on the body, and its bottom face rests on a shoulder on a block 80 which is adjustable for depth-of-cut by a screw 17, and it is clamped by a screw 96. In a modification, the tool and block 80 are clamped by a wedge 100, Fig. 8.
Patent GB-1221030-A (GB)
Title: Arrangement for checking a group of coded binary signals according to an "m out of n" code
IPC: H03M13/51
Filed: 1969-04-02
Abstract: 1,221,030. Selective signalling. C.I.T. COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS. 2 April, 1969 [2 April, 1968], No. 17398/69. Heading G4H. A circuit for checking an m out of n code comprises transistors TA-TE having their bases connected to corresponding ones of the input conductors a-e, pairs of gates P1p, P1s to P10p, P10s, each corresponding to one of the possible input combinations, with the gates such as P1p having inputs connected to the transistors corresponding to the marked conductors a-e and the gates such as P1s having inputs connected to the complementary conductors a-e of the respective input combination, and the pairs of gates each have a common output to a further transistor TS through a respective diode D1s-D10s. Transistors TATE are normally conducting so that diodes D1s-D10s are blocked by current flow through the gates P1p-P10p and resistors R1-R10. The blocked condition of diodes D1s-D10s is maintained by current flow through any one of the diodes of the associated gates such as P1p in the case of less than m of conductors a-e being marked or by current flow through any of the diodes of the associated gates such as P1s in the case of more than m of conductors a-e being marked.
Patent GB-1412848-A (GB)
Title: Electrolytic process for the production of metals in molten halide systems
IPC: C25C7/00
Filed: 1973-04-11
Abstract: 1412848 Electrolytically producing metal in a molten halide electrolyte CONZINC RIOTINTO OF AUSTRALIA Ltd 11 April 1973 [17 April 1972] 17424/73 Heading C7B In electrolytically producing a metal (such as Mg, Al, Pb, Bi, Zn, Ce or Ga) as a liquid phase in a molten halide electrolyte, the electrolysis is effected with at least one pair of spaced, substantially parallel electrodes, the opposed surfaces of which are inclined at an angle of from 5 to 30 degrees to the vertical, and gas formed at the inter-electrode space is discharged upwardly into a gas separation chamber disposed above the inter-electrode space, the dimensions of the chamber being such as to provide sufficient surface area and depth of liquid electrolyte therein above the cathode to permit separation of gas from the electrolyte in the chamber at substantially the same rate as the gas is produced in the inter-electrode space. By the process, back-reaction between the gas and electrolytically produced metal is substantially prevented and current efficiency is increased. The interelectrode spacing may be less than 2 inches. Fig.3 shows a cell comprising an anode 1 and cathodes 2. Fig.5 shows a cell comprising an anode 1, cathodes 3, bipolar electrodes 2 with insulating supports 6 and a refractory lined steel shell 4. The examples are of producing Mg from MgCl 2 - KCl-LiCl melts and Al from an AlCl 3 -NaCl-KCl melt.
Patent GB-825475-A (GB)
Title: Process for the production of alkanolamines
Inventor: JOYCE THOMAS ALBERT
IPC: C07C215/12
Filed: 1958-05-30
Abstract: Di- or tri-alkanolamines or a mixture comprising di- and tri-alkanolamines are prepared by passing a gas containing an alkylene oxide gaseous under the reaction conditions through a monoalkanolamine, dialkanolamine or a mixture of mono- and di-alkanolamines liquid under the reaction conditions and continuously venting from the reaction zone at least part of the gas. The gas mixture may contain an inert gas such as nitrogen. It is preferably passed through the alkanolamine starting material at a rate such that part of the alkylene oxide, preferably 1-5% by weight, remains unreacted.  In a preferred embodiment the gas consists substantially of alkylene oxide free from inert gas.  It is desirable to pass an inert gas, e.g. nitrogen, through the alkanolamine starting material to remove substances such as oxygen which would react with the alkylene oxide, and also through the product to remove unreacted alkylene oxide, or the latter may be removed by reducing the pressure.  At atmospheric pressure, temperatures of 80-120 DEG C. are suggested for alkanolamines having less than 4 carbon atoms in each alkane radical.  Pressures of 0.5 to 20 atmospheres are mentioned.  Unreacted alkylene oxide vented from the reaction zone is normally absorbed, e.g. in alkanolamines, perhaps in aqueous solution or in acidified water. It is preferred that the carbon chains in the alkanolamine starting material contain 4 or less carbon atoms each and in the alkylene oxide 3 or less.  The chains may be straight or branched. The progress of the reaction may be followed by the increase in volume of the liquid reaction mixture or by equivalent weight determinations.  Examples describe the reaction of ethylene oxide with mono- and with di-ethanolamine to form triethanolamine and of propylene oxide with di-isopropanolamine to give a mixture of di- and tri-isopropanolamine which is then mixed with mono-isopropanolamine.
Patent GB-253727-A (GB)
Title: Improvements in and relating to discharging charger-conveyors for horizontal gas retorts and the like
IPC: C10B35/00
Filed: 1925-07-07
Abstract: 253,727. Aldridge, J. G. W., and Beavan, T. A. July 7, 1925. Charging and discharging. - In a pivoted push-plate discharging charger for horizontal gas retorts and the like, the side members A are of reduced width and are supported at intervals on the retort floor by legs B to allow the fuel to pass to the sides of the retort. The device is formed of sections hinged together at C and each having abutments B<1> at the front end which bear against the legs B and so prevent " hog-backing." The side members A are formed with blocks I for engagement with driving-arms on the usual polygonal wheel and are connected either by arch-bars D, whose rear edges are chamfered on the underside and to which the push-plates E are pivoted, or by chamfered tie-bars J, Fig. 10, in which case the plates E are pivoted on the side members A. The legs B are fitted with renewable and adjustable skids K. At the front end of the device is a pushplate H for discharging the coke, while at the rear end is, provided an adjustable. " cleaning-up " plate G. The push-plates E may be corrugated as shown in Fig. 10, and are bow-shaped in plan, the first plate being bowed forwardly to a greater extent than the remainder.
Patent GB-565300-A (GB)
Title: Improvements in or relating to apparatus for conveying flexible strip material
IPC: B65H23/02
Filed: 1943-10-23
Abstract: 565,300. Feeding webs. KODAK, Ltd. Oct. 23, 1943, No. 17475. Convention date, Jan. 21, 1943. [Class 100 (i)] In apparatus, such as coating or drying apparatus, in which a web of material is supported only at its margins by short rollers, web engaging devices are arranged adjacent to the rollers to brake the movement of the material and thus prevent wrinkling of the material adjacent the rollers. In one form, Fig. 4, the web P is supported at its edges by short flanged rollers 4 free to rotate on sleeves 8 mounted on the sleeve portions 9 of discs 10 pinned to the stationary shaft 3. Instead of discs, fixed shoes 23, Fig. 6, may be secured to a cross-shaft 27. In a further form, Fig. 8, rollers 49 are driven from the rollers 4 at a different speed or in the opposite direction, by a differential gear, that shown comprising internal gears 40, 48 on the rollers and pinions 41, 43 on a spindle 42 carried by a fixed bracket 45.
Patent GB-802781-A (GB)
Title: An improved means for forming cams
IPC: B24B19/12
Filed: 1954-06-15
Abstract: 802,781. Grinding cams. HORSTMANN, S. A., and HORSTMAN, Ltd. July 11, 1955 [June 15, 1954], No. 17526/54. Class 60. A cam 17 being ground by a grinding wheel 18 is carried by a shaft 15 driven through a universal joint 16, the shaft being carried by levers 20 on a shaft 12 carried in bearings 11 ; the levers 20 have bosses 29 which receive a stabilizing or stiffening bar 24a. The shaft 12 has an arm 14 locked by a spring 13, weight or hydraulic means. The shaft 15 also carries a master cam 19 co-operating with a roller 21 carried by bracket 11. The shaft 15 also carries a cam 23 which is the negative of the master cam 19 and co-operates with a roller 24 carried by a pivoted arm 25 loaded by a spring 28 or other means. Any rotation imparted to the shaft 15 by the action of the roller 21 on the master cam 19 is counteracted by the action of the roller 24 on the negative cam 23. In the case of a multiple cam forming machine, the master cams and negative cams may be axially movable to bring them into contact with the rollers 21, 24. When multi-cam cam shafts are being ground, indexing means are provided so that the cams can be produced from a single master cam.
Patent GB-829479-A (GB)
Title: Improved fungicidal copper sprays
IPC: A01N59/20
Filed: 1958-06-02
Abstract: Fungicidal spray compositions comprise a polyglycol ether or a glycerol fatty acid ester containing at least one free OH group in the glycerol part of the molecule, a fatty acid metal salt and a fungicidal copper compound, e.g. copper oxides, copper salts, a basic copper salt or a complex of a copper compound and a salt of another metal with a copper content of 5-70% by weight and preferably 25-50% by weight.  The polyglycol ether may be aryloxy polyglycol ether, e.g. a reaction product of ethylene oxide or propylene oxide or a mixture thereof with phenol, a cresol, a hydroxydiphenyl or a benzyl hydroxydiphenyl or a fatty alcohol polyglycol ether, e.g. a reaction product of one or more C8-C25 alcohols with ethylene oxide or propylene oxide or a mixture thereof, preferably the reaction product of one or more C12-C18 alcohols such as lauryl, stearyl, palmityl or oleyl polyglycol ether.  Specified esters are lauric acid-glycerol mono- or di-ester, palmitic acid-glycerol mono- or diester or stearic acid-glycerol diester.  Specified fatty acid metal salts are the sodium, potassium, zinc, magnesium, manganese, iron, titanium, aluminium or copper salt of lauric acid, stearic acid, palmitic acid, inorganic acid, oleic acid or linoleic acid. Specified copper compounds are cupric oxide, copper oxychloride (Cu(OH)2 CuCl2), cupric sulphate, cupric carbonate, basic copper oxychloride ([3Cu(OH)2].CuCl2), basic cupric sulphate (Cu(OH)2.CuSO4), cupric chloride, basic copper carbonate or the complexes Cu(OH)2.CaCl2, Cu(OH)2.ZnCl2 or Cu(OH)2 MgCl2, or mixture of one or more of these copper compounds with zinc phosphate, zinc sulphate, zinc carbonate, zinc oxide, zinc sulphide or magnesium carbonate.
Patent GB-280468-A (GB)
Title: Improvements in and connected with air valves for pneumatic pads and the like
IPC: F16K31/58
Filed: 1927-07-02
Abstract: 280,468. Le Brasseur Surgical Manufacturing Co., Ltd., and Desmond, M. V. July 2, 1927. Valves. actuated indirectly; inftating-valves.- An inflating valve particularly applicable for use on the pneumatic pads of surgical trusses has the parts screwed together with a thread of the opposite hand to that used for attaching the inflating pump so that the valve is opened as the pump is attached. The valve member d has axial and transverse passages g, and has a solid end adapted to clamp a compressible washer a against a shoulder c formed in the outer casing a. The valve member which engages a righthand thread in the casing has an external manipulating flange i and an internal flange k adapted to co-operate with a stop pin. The inflating pump has a nipple f with a left-handed thread adapted to engage a corresponding thread in a socket formed in the valve member.
Patent GB-1063035-A (GB)
Title: Improvements in and relating to devices for cutting recording tape threaded into recording and/or playback apparatus
IPC: G11B15/18
Filed: 1964-04-29
Abstract: 1,063,035. Cutting magnetic tapes; editing. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. April 29, 1964 [May 2, 1963], No. 17758/64. Heading G5R. Movement of an operating lever 17 in the direction A, Fig. 1, elevates a tape-knife assembly 4 to a 45 degrees position relative to the length of the tape 2, advances supports 34, 35 to raise the tape clear of the record/playback head 1, holds the tape against the side face 8, Fig. 2, of the assembly 4, winds up a spring 15 and then releases a blade 5, slidable in a slot 9 in the assembly 4 to cut the tape 2. The linkage 20-23-swings a pin 24, Fig. 3, to the left and the pin, acting in the slot 26 elevates the knife assembly from its rest position (solid lines) to its working position (dotted lines and Figs. 1, 2) and moves a member 16, attached to the spring 15 down a guide tube 7 away from the knife-holder 6, latched by a sear 29. The final rotation of the assembly, engages trigger 32 with a support member 33 to release the knife. The blade 5 is arranged with its cutting edge obtusely to the cut, to prevent trapping the tape against the side 8 of the tube 7 and the stroke is limited by a pin 40. A spring 39 returns all members to their initial positions in readiness for the next cut.
Patent GB-1155125-A (GB)
Title: Dimerisation of Olefines
Inventor: SAMPSON ROY JOHN
IPC: C07C2/16
Filed: 1967-04-18
Abstract: 1,155,125. Dimerizing olefins. IMPERIAL CHEMICAL INDUSTRIES Ltd. 5 April, 1968 [18 April, 1967], No. 17781/67. Heading C5E. Olefins are dimerized or co-dimerized by contact with a catalyst comprising at least 7 weight per cent (calculated as metal) of a transition metal compound and a silica-alumina support containing 20-35 weight per cent alumina and 80-65 weight per cent silica. The metal compound may be an oxide, sulphate or chloride of nickel or cobalt, preferably nickel oxide. Examples describe the dimerization of propylene, and a mixture of propylene, transbutene-2 and cis-butene-2.
Patent GB-1213394-A (GB)
Title: Improvements in and relating to central heating
Inventor: ZENKNER KURT
IPC: F24H3/00
Filed: 1968-04-16
Abstract: 1,213,394. Central heating systems. K. ZENKNER. 16 April, 1968 [18 April. 1967; 14 Feb., 1968], No. 17797/68. Heading F4U. The heat source of a hot water central heating system is provided by an electrically heated thermal storage unit whose storage core includes upright heat exchange pipes, the lower ends of the pipes being connected to the runback of the system and the upper ends being connected to the forerun. The system is such that steam bubbles form in the pipes when heat is not being drawn from the core, and that no steam is formed when heat is being drawn from the core. As illustrated, the storage core is formed by magnesia bricks whose faces are formed to accommodate heat exchange pipes 35. The pipes 35 are connected to headers 35a and 35b which are detachably connected to the forerun 39 and the runback 38. When heat output is required at radiators 43, a pump 44 is started up and any steam present in the pipes 35 is forced into the forerun to be condensed in a condenser 40 which is cooled by runback water branched into a pipe 41. The forerun water and the cooling runback water are mixed at a mixing valve 42. The storage bricks include openings 34b for the electric heating elements and openings 34c for tie rods. The condenser may be omitted in which case steam condenses in the pipes of the forerun. When the mixing valve is present, the admission of water to the pipe 41 may be controlled in accordance with the water temperature immediately downstream of the mixing valve and the speed of the pump 44 may be controlled in accordance with forerun water temperature, Fig. 13 (not shown).
Patent GB-1321133-A (GB)
Title: Electromagnetic transducer head and method for manufacturing such a head
IPC: G11B5/31
Filed: 1971-05-28
Abstract: 1321133 Magnetic heads INTERNATIONAL BUSINESS MACHINES CORP 28 May 1971 [30 June 1970] 17807/71 Heading G5R A magnetic head comprises an elongated first layer 11 of magnetic material, a second layer 12 of magnetic material magnetically joined at 38 to one end 34 of the first layer and overlapping the other end 23 of the first layer to form a non-magnetic gap 14 therebetween, and electrical windings 30, 42 and 31, 43 extending around the first magnetic layer 11. As shown, the non-magnetic gap 14 is provided by a layer 17 of electrically conductive material to which the windings are connected so that return current is conducted through the legs 21, 22 of the core formed by the magnetic layers 11, 12 to a terminal 37, the other terminal being provided by a conductive layer 29. The head is built up by successive depositions, maskings and etchings of layers of permalloy, insulator and conductor (e.g. copper), using photolithographic, vacuum and thin film techniques.
Patent GB-681492-A (GB)
Title: Improvements in or relating to pneumatic delivery boxes
Inventor: OWEN THOMAS WILLIAM
IPC: D01G23/08
Filed: 1950-07-19
Abstract: 681,492. Pneumatic conveyers. BRITISHCOTTON INDUSTRY RESEARCH ASSOCIATION. June 29, 1951. [July 19, 1950] No. 17996/50. Class 78 (i). In delivery boxes used in the textile industry in pneumatic conveying systems for extracting the fibrous material from the conveying air of the kind in which the fibres collect on the perforated periphery of a rotating suction cage 13, the suction area of the cage is enclosed bv the box 10 and sealing means 22, 23 is provided for engaging the periphery of the cage before and after the leading and trailing edges of this area, the sealing means at the trailing edge being yielding to permit the the passage of the fibres beneath it. The seal 22 is a flexible leather strip which is flexed inwardly as the cage moves beneathit. The sheet metal seal 23 is pivoted at 24 has an outwardly curved lower edge 23a and may be spring-loaded into the operative or inoperative position. Flexible strips 25 on the periphery of the cage remove any fibres which fail to pass beneath the seal 23.
Patent GB-1431565-A (GB)
Title: Cascade amplifier using complementary conductivity transistors
IPC: H03F3/45
Filed: 1973-04-13
Abstract: 1431565 Transistor amplifying circuits RCA CORPORATION 4 July 1973 [13 April 1973] 18030/73 Heading H3T A phase-splitting arrangement comprises a transistor of first conductivity type the collector of which is connected to the emitter of a transistor of second conductivity type and also to a source of current 2I c  comprising a current amplifier of predetermined gain and having an input current I c . The emitter circuit of the first transistor comprises a load resistor of such value that it passes a current I c  and across which the first output is obtained, while the collector circuit of the second transistor comprises a resistor of equal value across which the second output is obtained. In an embodiment, the first transistor is replaced by a Darlington pair 102, 103 and the second by a further Darlington pair 107, 207, and the source of current 2I c  comprises a transistor 224. The transistor 224 is biased by means of a circuit comprising Darling- ton pair 202, 203 and resistor 210 identical with the Darlington pair 102, 103 and resistor 110 and so passing current I c , transistor 223 and diode-connected transistors 221, 222. In another embodiment a single transistor 107 (Fig. 3, not shown) is used, its base being connected to the collectors of transistors 202, 203, while transistor 224 is replaced by a direct connection. The arrangement provides symmetrical limiting.
Patent GB-389843-A (GB)
Title: Method of producing a screen for the production of photographic colour pictures
IPC: G03C7/12
Filed: 1931-06-22
Abstract: 389,843. Colour photography. DRKOPPWERKE AKT. - GES., 2, Nikolaus D³rkopp Strasse, Bielefeld, Germany. June 22, 1931, No. 18033. Convention date, June 1. [Class 98 (ii).] A process of preparing multicolour screens for the production of colour photographs comprises the steps of sensitizing a layer of gelatine or other colloid ; copying a line screen on the layer to produce hardened uncoloured areas ; resensitizing the layer and applying a colour thereto, e.g. red; exposing the layer under a line screen and washing the colour from the unhardened areas ; and recolouring these in a second colour, e.g. green. The screen may then be bathed successively in potassium permanganate and potassium meta-bisulphite, washed, dried, varnished and coated with a panchromatic emulsion. For a three-colour screen, the second colour used is ultramarine and the step of hardening by exposure through a screen is repeated with the screen arranged at right-angles to the position at the first exposure. The blue colour is then washed out wholly or partially and the washed areas treated with green dye or with yellow dye forming green by combination with the blue. Instead of producing the hardened areas by exposure, they may be formed by applying a screen printed on silver bromide paper to the layer according to the ozobrome process. Suitable colours for the process are pinatype red and pinatype blue.
Patent GB-823557-A (GB)
Title: Improvements in or relating to magnetic core material
Inventor: PLANER GEORGE VICTOR
IPC: C04B35/26
Filed: 1956-06-12
Abstract: 823,557. Magnetic compositions. INTERNATIONAL COMPUTERS & TABULATORS Ltd. June 11, 1957 [June 12, 1956], No. 18102/56. Class 38 (2). A ferromagnetic ferrite exhibiting a rectangular hysteresis loop is made by sintering together MgO, MnO 2 , Fe 2 O 3  in the relative proportions by weight which fall within the area WXYZ of the triaxial diagram shown in Fig. 3, or other compounds in such proportions as to give a similar result. The starting materials were milled in water, dried prefired at 1000‹ C. for 1 hour in nitrogen or air, reground, mixed with an organic binder, moulded and fired at 139‹ to 1500‹ C. for a half to one hour in nitrogen or air. Magnetic properties are tabulated for a number of ferrites made from materials in different starting proportions indicated by the points A, B, C, D, E.